Question

The compound shaft shown in Fig. P-324 is attached to rigid
supports. For the bronze
segment AB, the maximum shearing stress is limited to 8000 psi and
for the steel
segment BC, it is limited to 12 ksi. Determine the diameters of
each segment so that
each material will be simultaneously stressed to its permissible
limit when a torque T =
12 kip·ft is applied. For bronze, G = 6 × 106
psi and for steel, G = 12 × 106